mp4audec.c

MPEG2/MPEG4编解码参考程序(实现了MPEG4的部分功能)

    return 1;
  }

  if ((mainDebugLevel >= 3) && (info != NULL))
    printf("info=\"%s\"\n",info);

  /* read bit stream header */
  bitHeader = BsAllocBuffer(BITHEADERBUFSIZE);

  if (!((strstr(decPara, "-aac_raw") != NULL) ||
        (strstr(decPara, "-aac_sca") != NULL) ||
        (strstr(decPara, "-aac_core_bsac") != NULL))) {
    if (strstr(decPara, "-aac_sys") != NULL || strstr(decPara, "-aac_sys_bsac") != NULL 
        || strstr(decPara, "-mp4ff") != NULL) {
      unsigned long length,align,dummy,odStartByte;
      bitHeaderNumBit=0;
      adifInfo.profile = LC_Profile;
      if (BsGetBit(bitStream,&(objDescr.ODLength.value),objDescr.ODLength.length) )
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      odStartByte=BsCurrentBit(bitStream)/8;

      if (BsCurrentBit(bitStream) % 8 != 0 )CommonExit(-1,"error in reading object descr");

      if ( BsGetBit(bitStream,&(objDescr.ODescrId.value),objDescr.ODescrId.length) ||
           BsGetBit(bitStream,&(objDescr.streamCount.value),objDescr.streamCount.length) ||
           BsGetBit(bitStream,&(objDescr.extensionFlag.value),objDescr.extensionFlag.length))
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      if (mainDebugLevel >= 3) {
        printf("ObjectDescriptor.streamCount: %ld \n",objDescr.streamCount.value);
      }

      frameNumBit=0;
      bitRateLong=0;
      bitReservSize = 0;
      for (x=0;x<objDescr.streamCount.value;x++){
        int frameNumBitLay;
        initESDescr(&(objDescr.ESDescriptor[x]));
        advanceESDescr(bitStream,objDescr.ESDescriptor[x],0);
        fSampleLong=samplFreqIndex[objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex.value];
        frameNumBitLay = ( objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024) 
          *  objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value / fSampleLong ;

        sn_ovrhd = objDescr.ESDescriptor[x]->ALConfigDescriptor.seqNumLength.value%8 ? 1:0;

        frameNumBitLay += (3+sn_ovrhd)*8*(1 + (frameNumBitLay/2040)) ; /* overhead for flexMux transport */
        frameNumBit += frameNumBitLay;
        bitRateLong += objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value;
        bitReservSize += objDescr.ESDescriptor[x]->DecConfigDescr.bufferSizeDB.value;
        if (mainDebugLevel >= 3) {
          printf("\nESDescriptor.ESNumber: %ld \n",objDescr.ESDescriptor[x]->ESNumber.value);
          printf("  ESDescriptor.streamDependence: %ld \n",objDescr.ESDescriptor[x]->streamDependence.value);
          printf("  ESDescriptor.dependsOn_Es_number: %ld \n",objDescr.ESDescriptor[x]->dependsOn_Es_number.value);
          printf("  ESDescriptor.DecConfigDescr.streamType: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.streamType.value);
          printf("  ESDescriptor.DecConfigDescr.bufferSizeDB: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.bufferSizeDB.value);
          printf("  ESDescriptor.DecConfigDescr.avgBitrate: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.audioDecoderType: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.audioDecoderType.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.channelConfiguration: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.channelConfiguration.value);

          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.TFCodingType: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.TFCodingType.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.dependsOnCoreCoder: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.dependsOnCoreCoder.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.coreCoderDelay: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.coreCoderDelay.value);

          printf("  ESDescriptor.ALConfigDescriptor.useAccessUnitStartFlag.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.useAccessUnitStartFlag.value);
          printf("  ESDescriptor.ALConfigDescriptor.useRandomAccessPointFlag.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.useRandomAccessPointFlag.value);
          printf("  ESDescriptor.ALConfigDescriptor.usePaddingFlag.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.usePaddingFlag.value);
          printf("  ESDescriptor.ALConfigDescriptor.seqNumLength.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.seqNumLength.value);
        }
      }
      frameMinNumBit=0;
      length=  BsCurrentBit(bitStream)/8;
      align = 8 -  BsCurrentBit(bitStream) % 8;
      if (align == 8) align = 0;
      if (align != 0) {
        length += 1;
      }
      BsGetBit(bitStream,&(dummy),align) ;
      if ( (length-odStartByte) != objDescr.ODLength.value) CommonExit(-1,"error in object descriptor read");

      bitReservInit= bitReservSize;        /* BT 971105 */  
      bitHeaderNumBit=0;
      mode = MODE_TF;
      numChannelOri=objDescr.ESDescriptor[0]->DecConfigDescr.audioSpecificConfig.channelConfiguration.value;
      frameData.od = &objDescr;
    
    }
    else if(strstr(decPara, "-tvq_sys") !=NULL) {
      unsigned long length,align,dummy,odStartByte;
      int frameNumBitLay=0;/* T.Ishikawa 980703 */
      int FlexNumBitLay=0; /* T.Ishikawa 980727 */
      adifInfo.profile = LC_Profile;
      bitHeaderNumBit=0;
      if (mainDebugLevel >= 3) {
        printf("Decode: Init : %ld\n",BsCurrentBit(bitStream));
      }
      if (BsGetBit(bitStream,&(objDescr.ODLength.value),objDescr.ODLength.length) )
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      odStartByte=BsCurrentBit(bitStream)/8;

      if (BsCurrentBit(bitStream) % 8 != 0 )CommonExit(-1,"error in reading object descr");

      if ( BsGetBit(bitStream,&(objDescr.ODescrId.value),objDescr.ODescrId.length) ||
           BsGetBit(bitStream,&(objDescr.streamCount.value),objDescr.streamCount.length) ||
           BsGetBit(bitStream,&(objDescr.extensionFlag.value),objDescr.extensionFlag.length))
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      if (mainDebugLevel >= 3) {
        printf("ObjectDescriptor.streamCount: %ld \n",objDescr.streamCount.value);
      }

      frameNumBit=0;
      bitRateLong=0;

      for (x=0;x<objDescr.streamCount.value;x++){
        int frameNumBitLay;
        initESDescr(&(objDescr.ESDescriptor[x]) );
        advanceESDescr(bitStream,objDescr.ESDescriptor[x],0);
        fSampleLong=samplFreqIndex[objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex.value];
        /* T.Ishikawa 980703 */
        frameNumBitLay =(int)( (float)( objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024) *  (float)objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value / (float)fSampleLong+0.5) ;
        frameNumBit += frameNumBitLay;
        if (mainDebugLevel >= 3) {
          printf("mp4dec: frameNumBitLay[%d] %d\n",x,frameNumBitLay);
        }
        bitRateLong += (int)(objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value);
        frameNumBit += 3*8*(1+(frameNumBitLay/2040));
        FlexNumBitLay += 3*8*(1+(frameNumBitLay/2040));/* T.Ishikawa 980727 */
		
        /*	if (mainDebugLevel) {	
                printf("mp4dec : avgBitrate %d[%d]\n",objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value,x);
                }*/
		
      }	  
      if (mainDebugLevel >= 3) {
        printf("mp4dec: FlexNumBitLay %d\n",FlexNumBitLay);
      }
      frameNumBit = (int)(bitRateLong*( objDescr.ESDescriptor[0]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024)/(float)fSampleLong + 0.5)+FlexNumBitLay; /* T.Ishikawa 980727 */
	  
      /*	  bitRateLong += ((int)( (31.0*fSampleLong/(float)(objDescr.ESDescriptor[0]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024)) * (float)objDescr.streamCount.value + 25.0*fSampleLong/(float)(objDescr.ESDescriptor[0]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024)));*/

      if (mainDebugLevel >= 3) {
        printf("mp4dec : bitRateLong %ld\n",bitRateLong);	  
      }
      /*	  frameNumBit=(int)(((float)bitRateLong*(objDescr.ESDescriptor[0]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024)/fSampleLong)+0.5);*/

      if (mainDebugLevel >= 3) {
        printf("mp4dec : frameNumBit(tvq_sys Init) %d, frameNumBitLay %d\n",frameNumBit,frameNumBitLay);	  
      }
      /* Notice! : frameNumBit=1141 */
      /*        frameNumBit -= 3*8*(1 + (objDescr.streamCount.value/2040)) ;*/ /* overhead for flexMux transport */	  

	  
#if	  0
      for (x=1;x<objDescr.streamCount.value;x++){
        int frameNumBitLay=0;
        frameNumBitLay +=(int)( (float)( objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024) 
                                *  (float)objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value / (float)fSampleLong) ;

        frameNumBitLay += 3*8*(1 + (frameNumBitLay/2040)) ; /* overhead for flexMux transport */
      }
#endif

      for (x=0;x<objDescr.streamCount.value;x++){
        if (mainDebugLevel >= 3) {
          printf("\nESDescriptor.ESNumber: %ld \n",objDescr.ESDescriptor[x]->ESNumber.value);
          printf("  ESDescriptor.streamDependence: %ld \n",objDescr.ESDescriptor[x]->streamDependence.value);
          printf("  ESDescriptor.dependsOn_Es_number: %ld \n",objDescr.ESDescriptor[x]->dependsOn_Es_number.value);
          printf("  ESDescriptor.DecConfigDescr.streamType: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.streamType.value);
          printf("  ESDescriptor.DecConfigDescr.bufferSizeDB: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.bufferSizeDB.value);
          printf("  ESDescriptor.DecConfigDescr.avgBitrate: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.audioDecoderType: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.audioDecoderType.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.channelConfiguration: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.channelConfiguration.value);

          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.TFCodingType: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.TFCodingType.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.dependsOnCoreCoder: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.dependsOnCoreCoder.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.coreCoderDelay: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.coreCoderDelay.value);
        }
      }

      frameMinNumBit=frameNumBit;
      length=  BsCurrentBit(bitStream)/8;
      align = 8 -  BsCurrentBit(bitStream) % 8;
      if (align == 8) align = 0;
      if (align != 0) {
        length += 1;
      }
      BsGetBit(bitStream,&(dummy),align) ;
      if ( (length-odStartByte) != objDescr.ODLength.value) {
        CommonExit(-1,"error in object descriptor read");
      }
      if (mainDebugLevel >= 3) {
        printf("####  Decoder : length %ld  #####\n",length);
      }
      bitReservSize= 0; /* T.Ishikawa */
      bitReservInit= 0; 
      bitHeaderNumBit=0;
      mode = MODE_TF;
      numChannelOri=objDescr.ESDescriptor[0]->DecConfigDescr.audioSpecificConfig.channelConfiguration.value;
      frameData.od = &objDescr;

    } else if(strstr(decPara, "-hvxc_sys") !=NULL) {	/* AI 990616 */
      unsigned long length,align,dummy,odStartByte;
      bitHeaderNumBit=0;

      if (BsGetBit(bitStream,&(objDescr.ODLength.value),objDescr.ODLength.length) )
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      odStartByte=BsCurrentBit(bitStream)/8;

      if (BsCurrentBit(bitStream) % 8 != 0 )CommonExit(-1,"error in reading object descr");

      if ( BsGetBit(bitStream,&(objDescr.ODescrId.value),objDescr.ODescrId.length) ||
           BsGetBit(bitStream,&(objDescr.streamCount.value),objDescr.streamCount.length) ||
           BsGetBit(bitStream,&(objDescr.extensionFlag.value),objDescr.extensionFlag.length))
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      if (mainDebugLevel >= 3) {
        printf("ObjectDescriptor.ODLength: %ld \n",objDescr.ODLength.value);
        printf("ObjectDescriptor.ODescrId: %ld \n",objDescr.ODescrId.value);
        printf("ObjectDescriptor.streamCount: %ld \n",objDescr.streamCount.value);
        printf("ObjectDescriptor.extensionFlag: %ld \n",objDescr.extensionFlag.value);
      }

      frameNumBit=0;
      bitRateLong=0;
      bitReservSize = 0;
      for (x=0;x<objDescr.streamCount.value;x++){
        int frameNumBitLay;
        initESDescr(&(objDescr.ESDescriptor[x]));
        advanceESDescr(bitStream,objDescr.ESDescriptor[x],0);
        fSampleLong=samplFreqIndex[objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex.value];
        frameNumBitLay = ( objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.TFSpecificConfig.frameLength.value ? 960:1024) 
          *  objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value / fSampleLong ;

        sn_ovrhd = objDescr.ESDescriptor[x]->ALConfigDescriptor.seqNumLength.value%8 ? 1:0;

        frameNumBitLay += (3+sn_ovrhd)*8*(1 + (frameNumBitLay/2040)) ; /* overhead for flexMux transport */
        frameNumBit += frameNumBitLay;
        bitRateLong += objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value;
        bitReservSize += objDescr.ESDescriptor[x]->DecConfigDescr.bufferSizeDB.value;
        if (mainDebugLevel >= 3) {
          printf("\nESDescriptor.ESNumber: %ld \n",objDescr.ESDescriptor[x]->ESNumber.value);
          printf("  ESDescriptor.streamDependence: %ld \n",objDescr.ESDescriptor[x]->streamDependence.value);
          printf("  ESDescriptor.dependsOn_Es_number: %ld \n",objDescr.ESDescriptor[x]->dependsOn_Es_number.value);
          printf("  ESDescriptor.DecConfigDescr.streamType: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.streamType.value);
          printf("  ESDescriptor.DecConfigDescr.bufferSizeDB: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.bufferSizeDB.value);
          printf("  ESDescriptor.DecConfigDescr.avgBitrate: %ld \n",objDescr.ESDescriptor[x]->DecConfigDescr.avgBitrate.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.audioDecoderType: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.audioDecoderType.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.samplingFreqencyIndex.value);
          printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.channelConfiguration: %ld \n",
                 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.channelConfiguration.value);
	  
	  printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.hvxcSpecificConfig.HVXCvarMode: %ld \n",
		 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.hvxcSpecificConfig.HVXCvarMode.value);
	  printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.hvxcSpecificConfig.HVXCrateMode: %ld \n",
		 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.hvxcSpecificConfig.HVXCrateMode.value);
	  printf("  ESDescriptor.DecConfigDescr.audioSpecificConfig.specConf.hvxcSpecificConfig.extensionFlag: %ld \n",
		 objDescr.ESDescriptor[x]->DecConfigDescr.audioSpecificConfig.specConf.hvxcSpecificConfig.extensionFlag.value);
          printf("  ESDescriptor.ALConfigDescriptor.useAccessUnitStartFlag.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.useAccessUnitStartFlag.value);
          printf("  ESDescriptor.ALConfigDescriptor.useRandomAccessPointFlag.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.useRandomAccessPointFlag.value);
          printf("  ESDescriptor.ALConfigDescriptor.usePaddingFlag.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.usePaddingFlag.value);
          printf("  ESDescriptor.ALConfigDescriptor.seqNumLength.value: %ld \n",
                 objDescr.ESDescriptor[x]->ALConfigDescriptor.seqNumLength.value);
        }
      }
      frameMinNumBit=0;
      length=  BsCurrentBit(bitStream)/8;
      align = 8 -  BsCurrentBit(bitStream) % 8;
      if (align == 8) align = 0;
      if (align != 0) {
        length += 1;
      }
      BsGetBit(bitStream,&(dummy),align) ;
      if ( (length-odStartByte) != objDescr.ODLength.value) CommonExit(-1,"error in object descriptor read");

      bitReservInit= bitReservSize;       
      bitHeaderNumBit=0;
      mode = MODE_HVXC;
      numChannelOri=objDescr.ESDescriptor[0]->DecConfigDescr.audioSpecificConfig.channelConfiguration.value;
      frameData.od = &objDescr;

    } else if(strstr(decPara, "-celp_sys") !=NULL) {
      unsigned long length,align,dummy,odStartByte;
      bitHeaderNumBit=0;

      if (BsGetBit(bitStream,&(objDescr.ODLength.value),objDescr.ODLength.length) )
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      odStartByte=BsCurrentBit(bitStream)/8;

      if (BsCurrentBit(bitStream) % 8 != 0 )CommonExit(-1,"error in reading object descr");

      if ( BsGetBit(bitStream,&(objDescr.ODescrId.value),objDescr.ODescrId.length) ||
           BsGetBit(bitStream,&(objDescr.streamCount.value),objDescr.streamCount.length) ||
           BsGetBit(bitStream,&(objDescr.extensionFlag.value),objDescr.extensionFlag.length))
        CommonExit(1,"Decode: error reading bit stream header (frame)");
      if (mainDebugLevel >= 3) {
        printf("ObjectDescriptor.ODLength: %ld \n",objDescr.ODLength.value);